import cv2

singled = cv2.imread(R"F:\Work\other\LiChao\original\labeled\originalMV\originalMV_000000.jpg", cv2.IMREAD_GRAYSCALE)
# singled = cv2.cvtColor(singled, cv2.COLOR_BGR2GRAY)
theImg = cv2.merge([singled, singled, singled])
cv2.imshow("a", theImg)
cv2.waitKey()
cv2.destroyAllWindows()
